@charset"utf-8"; /*--指定编码格式--/

/* @media screen and (min-width: 120px) {
  div {
    height: 100px;
    background: red;
  }
} */

.content {
  box-sizing: content-box;
  filter: blur(20px)
}

.border {
  box-sizing: border-box;
  filter: grayscale(90%);
}

.rotate {
  width: 200px;
  background: red;
  height: 400px;
  transform: rotate3d(0, 0, 1, 90deg);

}